URL monitoring: Keep a constant eye
on website performance and uptime


  • Monitor the response time and reachability of URLs

  • Monitor entire websites or individual elements

  • Be notified at once by the customizable PRTG alarm


Free Download

Unlimited version of PRTG for 30 days. After 30 days, PRTG reverts to a free version.
Or, you can upgrade to a paid license anytime.






Why URLs should always be reachable

Performance is a must

Performance is a must

For most companies, the website is an indispensable part of their daily business. Not only must the website always be available, but it should also be optimized to function at as high a level as possible. Downtime or long load times can be extremely costly.

Company website: A direct (or indirect) source of revenue

Company website: A direct
(or indirect) source of revenue

Even without an online store to generate sales directly, your website serves as an indirect source of revenue by providing customers with information about your company and the ways to access your services.

Consequences of a poorly functioning website

Consequences of a poorly
functioning website

If the URL of your online store is unavailable for several hours, this can result in an immediate and palpable loss in sales. When a web page takes too long to load, many users will simply give up and surf to another site. This, too, can have a negative impact on your company’s revenue. Example: Amazon found their sales would drop by 1% for every 100-millisecond increase in the load times of its pages.


Free Download

Unlimited version of PRTG for 30 days. After 30 days, PRTG reverts to a free version.
Or, you can upgrade to a paid license anytime.



URL monitoring:
Keep a constant eye on your website

PRTG constantly checks all your URLs

PRTG constantly checks all your URLs

With PRTG URL monitoring, you can continually check the reachability of your web pages. It lets you immediately see if a page is up and its processes running. You can even add and monitor several different pages – or an entire list of URLs – with a few quick clicks.



Built-in alarm and reports

Built-in alarm and reports

PRTG automatically verifies that entire pages or individual elements (such as text or images) are available. At the same time, the PRTG URL Monitoring Tool measures response times and displays this information in long-term graphs. Should your website go offline or a response time exceed its limit, you’ll immediately be alerted by SMS, email, or push notification.




An introduction to network monitoring with PRTG


Sensors for URL monitoring

 i What is a sensor?

In PRTG, “sensors” are the basic monitoring elements. One sensor usually monitors one measured value in your network, e.g. the traffic of a switch port, the CPU load of a server, the free space of a disk drive. On average you need about 5-10 sensors per device or one sensor per switch port.

View video (3:26 min.)

HTTP Sensor

HTTP Sensor

The HTTP sensor monitors a web server with the HTTP protocol. HTTP is the easiest way to check whether a website (or a certain website element) is reachable.

Be notified automatically

HTTP Transaction Sensor

The HTTP Transaction Sensor performs a series of HTTP requests which are sent to the server when a user visits a certain web page. In this way, it simulates the various actions carried out by a user upon visiting a website. Among other things, this sensor lets you simulate an online purchase or newsletter subscription. As a result, you can use this sensor to make sure critical processes (such as your online store’s shopping cart) are up and running.

Make work easier

HTTP Full Web Page Sensor

The HTTP Full Web Page Sensor uses a web browser instance such as Chromium or Internet Explorer. This sensor checks the load times of the entire website, including all its various elements (e.g. images). It does not, however, verify that all the site’s content was loaded.


All PRTG URL monitoring sensors support HTTP and HTTPS.


Why PRTG is the URL monitoring tool for you

All in one

All in one

There could be a number of reasons why your URLs are unreachable. PRTG not only lets you keep an eye on the uptime and performance of your pages, but also the web and network components that ensure your site stays functional: databases, servers, CDNs, and applications. With PRTG, you'll spend a lot less time troubleshooting.

Prompt alerts

Prompt alerts

One of the key features of PRTG is its customizable notification system. It’s simple: you set a custom threshold value for every parameter you wish to monitor. If this value is exceeded, then PRTG will immediately send you an alert by email, push notification, or SMS.

Automated reports

Automated reports

PRTG automatically logs the reachability of your URLs and the performance of your website. For example, with PRTG, you can have monthly PDF monitoring summaries sent to your manager automatically. These summaries will definitely come in handy when you’re asked to justify a request to update the IT infrastructure.

Free mobile apps

Free mobile apps

By the way, PRTG is also available as an app for your smartphone or tablet. This app is compatible with both iOS and Android devices and grants you worldwide access to your network monitoring environment. Its easy-to-read dashboard provides you with a close-up look at your network.


The goal: 99.999 percent!

When it comes to the availability of your website, servers, and databases,
only one figure matters: 99.999. These “five nines” are indicative of the
high availability of your network.
PRTG helps you target this ambitious goal.


Trusted by 300,000 users
and recognized by industry analysts as a leader


“Fantastic network and infrastructure monitoring solution that is easy to deploy and easier still to use. Simply the best available.”

Read more reviews

“Software is absolutely perfect, Support is superior. Meets all needs and requirements, This is a must have solution if you are needing any form of monitoring.”

Read more reviews

“The tool excels at its primary focus of being a unified infrastructure management and network monitoring service.”

Read more reviews


Free Download

Unlimited version of PRTG for 30 days. After 30 days, PRTG reverts to a free version.
Or, you can upgrade to a paid license anytime.



Keep a constant eye on your network
– even while on the go

PRTG can be started within minutes and it's compatible with many mobile devices.


PRTG comes with all the features you need, plus more your IT infrastructure won't want to live without.


PRTG monitors these vendors and applications, and more, in one view!



“We can all work with greater peace of mind knowing
that our systems are constantly being monitored.”

Markus Puke, Network Administrator, Schüchtermann Klinik, Germany


PRTG is a vital tool for getting your IT into tip-top shape!

The costs for a one-year PRTG license pay for themselves in an average of only a few weeks.
License costs vary according to the size of your network.

PRTG makes
your network more reliable

PRTG improves the reliability of your network

PRTG saves
network management costs

PRTG saves network management costs

PRTG saves time
spent on network management

PRTG saves time spent on network management


Free Download

Unlimited version of PRTG for 30 days. After 30 days, PRTG reverts to a free version.
Or, you can upgrade to a paid license anytime.




Other topics of interest

Website monitoring

How do I monitor my website health and performance? Web server status and availability, reachability via ping, visitor numbers...PRTG measures all the key data regarding your website. Custom PRTG reports present your information in an easy-to-read manner.

DHCP monitoring 

PRTG makes sure the DHCP service has been started and an address assigned. If the address pool is scarce or the response time too long, you’ll be notified at once.

Measuring Internet traffic

PRTG monitors Internet usage, bandwidth, and hardware such as routers and switches. With PRTG, you can rest assured that your coworkers and customers have access to all the information they need.


ebook website performance

Want to speed up your website?

In our free ebook you learn everything about website performance indicators, the 3 levels of fitness, how your website gets in shape and how you monitor it.

Get your free copy of our website performance ebook now.


Free Download

Unlimited version of PRTG for 30 days. After 30 days, PRTG reverts to a free version.
Or, you can upgrade to a paid license anytime.


Over 95% of our customers recommend PRTG


Paessler AG worldwide trialled PRTG in over 600 IT departments.
The aim was to tune the network monitoring software closer to the needs of the administrators.
The result of the survey: over 95% of the participants would recommend PRTG - or already had.

Recommend PRTG


PRTG The Swiss Army knife

PRTG: The Swiss Army knife for sysadmins

Adapt PRTG individually and dynamically to your needs relying on a strong API:

  • HTTP API: Access monitoring data and manipulate monitoring objects using HTTP requests
  • Custom Sensors: Create your own sensors for customized monitoring
  • Custom Notifications: Create your own notifications to send alarms to external systems
  • REST Custom Sensor: Monitor almost everything that provides XML or JSON


Still not convinced?



More than 300,000 sysadmins love PRTG

PRTG is used by companies of all sizes. Sysadmins love PRTG because it makes their job a whole lot easier.

Still not convinced?


Monitor your entire IT infrastructure

Bandwidth, servers, virtual environments, websites, VoIP services – PRTG keeps an eye on your entire network.




Free Download



Try PRTG for free

Everyone has different monitoring needs. That’s why we let you try PRTG for free. Start now with your 30-day trial.




Network Monitoring Software - Version (September 21st, 2021)


Download for Windows and cloud-based version PRTG Hosted Monitor available


English, German, Spanish, French, Portuguese, Dutch, Russian, Japanese, and Simplified Chinese


Up to 100 sensors for free (Price List)

Unified Monitoring

Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more

Supported Vendors & Applications


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